Plot:IF A TREE FALLS is a rare behind-the-curtain look at the Earth Liberation Front, the radical environmental group that the FBI calls America's 'number one domestic terrorist threat.' With unprecedented access and a nuanced point of view, the documentary tells the story of Daniel McGowan, an ELF member who faced life in prison for two multi-million dollar arsons against Oregon timber companies. The film employs McGowan's story to examine larger questions about environmentalism, activism, and terrorism.